IP Routing
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OSPF Link-state/Adjacency changesProtocols/BGP_OSPF_MPLS_VPN 2021. 2. 16. 16:46
OSPF has a link-state with neighbors. each state from Down to Full is changed with packets establishing a neighbor. if your OSPF neighbor does not come up to FULL state, you can make the troubleshooting closer by looking for the stuck state. 1. Shutdown each interface on R1, R2, R3 R1(config)#int e 0/0.123 R1(config-subif)#sh R2(config)#int e 0/0.123 R2(config-subif)#sh R3(config)#int e 0/0.123 ..
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Building OSPF network with EVE-NG (1)Protocols/BGP_OSPF_MPLS_VPN 2021. 2. 9. 18:26
OSPF(Open Shortest Path First) is a link-state routing protocol. OSPF version 2 is for IPv4 and version 3 is for IPv6. OSPF protocol is illustrated from RFC2328. Why OSPF? It is a standard protocol unlike EIGRP(Cisco). almost all network devices support OSPF for a routing protocol. Why no OSPF? OSPF could consume resources such as CPU and RAM but nowadays devices are high-performance so it is no..